%0 Journal Article %A György Elekes %T On the number of sums and products %J Acta Arithmetica %D 1997 %P 365-367 %V 81 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-81-4-365-367/ %R 10.4064/aa-81-4-365-367 %G en %F 10_4064_aa_81_4_365_367